"It's no use." Sherlock said as he walked around John. "I won't make the same mistake twice. And besides, Cerberus will make sure you don't go anywhere."

The giant hellhound had been laying down, but its great head lifted up at its name being called. When it figured out that it wasn't needed, it relaxed again.

Sherlock's fingers brushed against John's back, laying a hot trail down, down, down until he got to that fine, round arse. Firely fingers spread his cheeks apart while Sherlock's slightly forked tongue licked around the hole, tasting him.

"Oh, you've never had anyone before. Look at you, a virgin to the ways of hedonism." A finger teased at his entrance. "And yet, you are such a.. what do you mortals call it.. a size queen? You are hard for me. You want me to fuck you, to tear you apart and put you back together again, over and over and over."

One finger, with a sharp, almost claw like nail pushed at John's hole, just enough to barely open him.